Improvement in steam-engine boilers



. G E. BANNER. Steam-Engine Boiler.

No. 203,698. P tented May 14, I878.

UNITED STATES PATENT OFFICE.

GEORGE E. BANNER, OF NEWARK, NEW JERSEY, ASSIGNOR OF ONE-HALF HIS RIGHT TO ANNA GRAY FALES, OF HARTFORD, CONNECTICUT.

IMPROVEMENT IN STEAM-ENGINE BOILERS.

Specification forming part of Letters Patent No. 203,698, dated May 14,1878; application filed April 27, 1878.

To all whom it may concern:

Be it known that I, GEORGE EDWARD BANNER, of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Steam- Engine Boilers; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to boilers for steamengines; and consists, chiefly, in providing said boilers with annular partitions or diaphragms of pendent plates of metal extending on all sides to the bottom of the boilerproper, and adapted to deflect the heated air from the fire-tubes, so that it will pass down the outside of the water-legs before passing through the uptake of the flue, as hereinafter more fully described and claimed.

In the accompanying drawings, Figure 1 represents a vertical section of my improved boiler, and Fig. 2 represents a plan View of the same. Fig. 3 represents a horizontal section through the line as w of Fig. 1.

A designates the bed-plate or stand of my boiler; B, the cap or crown piece of the same and O, the outer shell, clamped between them by means of vertical rods D, which extend from top to bottom of the boiler, and are screwthreaded to receive nuts cl d. By the use of these rods and nuts I dispense with a multiplicity of fastening-bolts generally heretofore used for directly attaching said shell, and make attachment and removal much more convenicnt.

E designates the fire-box of my boiler, provided with grate e, crown-plate E and ashbox 6'. Said fire-box is provided with horizontal fire-tubes E which extend radially from the upper part of its periphery.

F designates the shell of the boiler, consisting of an enlarged upper part, F and a cylin drical smaller lower part, F These parts F and F may be constructed in a single piece, or made separately and then riveted together.

The enlargement of upper part F increases the steam space of the boiler without interfering with the other arrangements, hereinafter described.

through said space f to the lower end of parl tition G. Said heated air then passes under said lower end of said partition and up through the space between said partition and the j acket or outer shell to the outlet-flue H, which conveys itto the smoke-stack. The water in the boiler is thus exposed to the heat from the fire-' box, the tubes, and the annular surrounding space f, as the heated air passes though them in succession, so as to give the full benefit of its steam-producing powers. The said jacketcasing or outer shell is provided with an offset or chamber, M, at and about the inner end of outlet-flue.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a steam-boiler, the combination, with a fire-box, fire-tubes, shell, and outer casing, of a pendent annular diaphragm, consisting of plates of metal attached to said boiler-shell,

and arranged and operating substantially as and for the purposes set forth.

2. In a steam-boiler, the combination, with a fire-box, fire-tubes, boiler-shell, and outer jacket or casing, of an annular diaphragm extending on all sides down to a level with the bottom of the boiler proper, and arranged and operating substantially as and for the purposes set forth.

3. 'In a steam-boiler, the combinatiomwith a fire-box, fire-tubes, boiler-shell, and outer casing, of a pendent annular diaphragm or partition, consisting of sheets of metal attached to said boiler-shell, extending on all sides down to a level with the bottom of the boiler, and arranged and operating substantially as and for the purposes set forth.

In testimony that I claim the foregoing as my own I aflix my signature in presence of two witnesses.

GEORGE EDWARD BANNER.

Witnesses;

W. J. BABOOGK, IV. H. BABGOOK. 

